Drilling efforts at the platform were stopped for roughly 30 hrs over the last weekend to allow engineers from the ICDP Operational Support conduct downhole logging. First the platform crew completed the job of cleaning out and stabilizing the drill hole all the way to -150 m sediment depth by circulating mud (this effectively lines the bore hole walls with mud to keep it from collapsing into the hole). This provided the ideal conditions for down hole logging. Jochem Kück and Martin Töpfer of the ICDP-OSG, are shown here working with winch and instrument probes (sondes). Measurements included magnetic susceptibility, natural gamma, spectral gamma, electrical resistivity, sonic velocity and temperature. They also used an acoustic camera to image the borehole walls for structure and particle size information.